Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment at Cost and Accumulated Depreciation (Details) - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 509.9	$ 468.6
Less: Accumulated depreciation	(332.7)	(307.0)
Property, plant and equipment, net	177.2	161.6
Land and buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2.7	2.6
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	310.4	269.1
Furniture, leaseholds and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 196.8	$ 196.9